Floater and Riser Concept Selection FINAL - energydelphos.com · occur such as heat stress or heat...

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Confidential © 2013 Aker Solutions Preferred partner Floater and Riser Concept Selection INTSOK – Ciudad del Carmen, 8 th -10 th May 2013 Peter Leitch | Study Manager

Transcript of Floater and Riser Concept Selection FINAL - energydelphos.com · occur such as heat stress or heat...

Confidential © 2013 Aker Solutions Preferred partner

Preferred partner

Floater and Riser Concept SelectionINTSOK – Ciudad del Carmen, 8th-10th May 2013Peter Leitch | Study Manager

Confidential © 2013 Aker Solutions Preferred partner09 May 2013 Safety MomentSlide 2

Heat & HealthWhen the body is unable to cool itself by sweating, several heat-induced illnesses can occur such as heat stress or heat exhaustion and the more severe, heat stroke which can result in death.

Factors Leading to Heat StressHigh temperature and humidity; direct sun or heat; limited air movement; physical exertion; and poor physical condition.

Symptoms of Heat Exhaustion• Headaches, dizziness, lightheadedness or fainting.• Weakness and moist skin.• Mood changes such as irritability or confusion.• Upset stomach or vomiting.

Symptoms of Heat Stroke• Dry, hot skin with no sweating.• Mental confusion or losing consciousness.• Seizures or convulsions.

Preventing Heat Stress• Know signs/symptoms of heat-related illnesses; monitor yourself and coworkers.• Block out direct sun or other heat sources.• Use cooling fans/air-conditioning; rest regularly.• Drink lots of water; about 1 cup every 15 minutes.• Wear lightweight, light colored, loose-fitting clothes.• Avoid alcohol, caffeinated drinks, or heavy meals.

What to Do for Heat Related Illness• Call 911 (or local emergency) at once.While waiting for help to arrive:• Move the worker to a cool, shaded area.• Loosen or remove heavy clothing.• Provide cool drinking water.• Fan and mist the person with water.

Confidential © 2013 Aker Solutions Preferred partnerSlide 3

What We Do - Business Areas

Maintenance, modifications and operations

Oilfield services and marine assets

Umbilicals Process systemsEngineering SubseaDrilling technologies

Mooring and loading systems

Well intervention services

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Front End SpectrumRegion North America

(Houston)

Font End & TechnologyHenning Østvig

Senior Vice PresidentOslo

GM- St. John’sBjorn Viken

VP Engineering –St. John’s

Richard Severs

Executive AssistantKarina Uno

Technology Umbilicals/Risers

Kevin Haverty

Hull/Marine Engineering

Rolf Eide

Facilities/Process EngineeringBenny Farid

Director of Projects/Construction

Vladi Gorescu

Tendering/MarketingTorbjorn Prestegard

VPHouston

Business Management

William Rodrigues

Projects & Systems Support

Lars Marthinsen

FEED/DetailedEng ProjectsJon Husby

Front End SpectrumBarbara Thompson

Senior Vice President

Subsea Systems Engineering

TBN

Manager of Projects

Peter Leitch

Confidential © 2013 Aker Solutions Preferred partnerSlide 5

Major Components of Floating Production Systems

Subsea Systems

Risers & Umbilicals

Topsides

Hull

Station-keeping

(Mooring)

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Experience in Floating Facilities

1972 19911989 19961995 1997

2000 20052001 20082007 2010 2012

32 H3Semis

Veslefrikk Snorre TLP Norne FPSOGenesisSpar

Heidrun TLP

Asgard B Snorre B Kristin, White Rose

Blind Faith

2 x Aker H6e Gjøa Ichthys

Semi &FPSO

Laminaria

1999

More than 50 floating facilities designed

SkarvFPSO

2011

Confidential © 2013 Aker Solutions Preferred partnerAugust 28, 2010 Slide 7 part of Aker

Jacket / Dry tree

CompliantTower / Dry tree TLP / Wet & Dry tree

Mini-TLP / Dry & wet tree

Semi / Wet (Dry) tree

Truss Spar / Wet & Dry tree

Spar / Wet & Dry tree FPSO / Wet tree

Confidential © 2013 Aker Solutions Preferred partner09/05/2013 Slide 8

Deepwater Floater Options

Storage or pipeline

Dry trees or wet trees

Direct well access or independent drillingFPSO

TLP / Spar Semi w. drill

Semi / mini TLPMild weatherNo turret

Severe weatherTurret

Aasgard A

Snorre A Genesis

Snorre BP-51

Confidential © 2013 Aker Solutions Preferred partnerto edit this text Floaters & Risers-2008Slide 9

■ Surface (Dry Trees)■ Riser type: Top Tensioned Riser (TTR)■ Harsh environment: Low heave motion floaters,

i.e. TLPs, Spar, Fixed platforms■ Benign environment: Also possible with Semi■ GOM: Dry Tree Semi – new concept

■ Subsea (Wet Trees)■ Riser type: Flexibles, metallic catenaries, Hybrid

risers, etc.■ All floater types (FPSO, TLP, Spar, Semi)

Production - Surface vs. Subsea Completion

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Ship-shaped FPSOs

■ Storage required - No local infrastructure available

■ Disconnectable turret, able to quickly evade hurricanes

■ Not sensitive to topsides weight or area restrictions

■ Larger motions –challenges for risers

■ Faster track schedule potential for conversion-based FPSOs

9 May, 2013Slide 10

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TLPs

■ Very low heave motions for excellent dry tree applications

■ Water-depth limited (<1500m) due to tendon

■ Some examples may require offshore integration

■ Sensitive to topsides weight increase

9 May, 2013Slide 11

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Spars

■ Offshore integration required

■ Topsides weight and footprint challenges

■ Smaller topsides to hull weight ratios

■ Reduced heave motions suitable for wet or dry tree applications

■ Storage possible with new belly spar concept

9 May, 2013Slide 12

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Semisubmersibles

■ Inshore hull-deck integration

■ Large deck footprint available

■ Favourable hull/deck weight ratio

■ Large number of risers can be accommodated

■ Deep draft semis can accommodate SCRs in wet tree configuration

■ Dry tree semi can accommodate TTRs for direct well access

9 May, 2013Slide 13

Confidential © 2013 Aker Solutions Preferred partner9-May-13Slide 14

Deepwater Floater Concept Comparison

As-built data, steel weight vs. deck load

Floater Weight Efficiency

0

5,000

10,000

15,000

20,000

25,000

30,000

35,000

40,000

45,000

50,000

0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000

Hull Weight (st)

Deck

Ope

ratin

g W

t (st

)

TLPSPARSemi

Semi

TLP

Spar

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Riser Categories

9 May, 2013Slide 15

Flexible Risers

TTR - Marine Drilling Riser Hybrid Riser + SCR

Top Tension Riser + SCR

DNV – Riser definitions(DNV-OS-F201)

■ Top Tension Risers■ Marine Drilling (LP)■ HP Drilling■ Production

■ Flexible Risers■ Import/Export

■ Steel Catenary Risers■ Import/Export

■ Hybrid Risers■ Import/Export

■ Lazy Wave■ Import/Export

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Top Tensioned Riser (TTR)

■ TLP, Spar, Semi (new concept)■ Tensioner, Buoyancy Can

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Confidential © 2013 Aker Solutions Preferred partnerto edit this textSlide 17

Production - Flexibles – Widely used but with limitations

0

500

1000

1500

2000

2500

3000

6" 8" 10" 12" 14" 16"Internal Diameter

m

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Steel Catenary Risers (SCRs)

■ Semi, TLP, Spar■ Diameter 4.5″ – 24 ″■ Titanium Stress

Joint, or Flexible Joint

9 May, 2013Slide 18

Confidential © 2013 Aker Solutions Preferred partnerSlide 19

24” Gas Export SCR Configuration (from a TLP)

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Hybrid Risers

9 May, 2013Slide 20

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■ Typical deep water solution only■ Relative efficiency increases with water

depth■ Little effect on floater (separate buoyancy)

■ Important for selection of type of hybrid■ Options for flow assurance■ Effective installation

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Lazy Wave Riser (LWR)

• Conventional Draft Semi may potentially be utilized

•LWR effective in further reducing VIM fatigue damage

• Reduced fatigue damage in TDZ

• Potential to eliminate cladding in Sour Service conditions

Confidential © 2013 Aker Solutions Preferred partnerSlide 22

Miscellaneous Riser Configurations

Confidential © 2013 Aker Solutions Preferred partnerto edit this text Floaters & Risers-2008Slide 23

Production – Subsea Completion – Flexible/Compliant

Limits on combination of: ■ diameter ■ water depth ■ temperature

Diameter, D

Wat

er d

epth

, dSteel Catenaries

Titanium Catenaries

Flexibles

Confidential © 2013 Aker Solutions Preferred partnerto edit this textSlide 24

Risers – challenges (1)

■ Floater motions■ From wind & waves■ From current (oscillations; vortex induced motion)■ => dynamic motions of risers

■ Remedies:■ Flexibles in “shallow” water■ SCRs■ SCRs with tailored dynamics■ Titanium Catenary?■ Riser towers (bundles or single)

Confidential © 2013 Aker Solutions Preferred partnerto edit this textSlide 25

Risers – challenges (2)

■ Requirement for disconnect?■ Quick disconnect only reasonable■ FPSO with turret: proven!■ Others solutions: on concept level

16 0 m43 m

Confidential © 2013 Aker Solutions Preferred partnerto edit this textSlide 26

Risers – challenges (3)

■ Insulation of riser■ Increases complexity of riser system

■ Remedies:■ Externally insulated –> gets light■ Pipe-in-pipe -> gets heavy

■ Sour service:■ Welding & material challenge■ Reduces fatigue capacity considerable

■ Remedy: ■ Need less dynamic exposure of riser

Pipe-in-pipe?

Confidential © 2013 Aker Solutions Preferred partnerto edit this textSlide 27

Risers – challenges (4)

■ Installation

■ Weight in deep waters -> few vessels / high cost, for ■ Large diameter (exports)■ Pipe-in-pipe

■ In field welding quality for dynamic risers

■ Sensitive to bending/contact pressure during S-lay■ Externally Insulated Risers (SCRs) – syntactic foam■ Application of strakes (for avoiding riser VIV)

Confidential © 2013 Aker Solutions Preferred partnerSlide 28

Building Blocks for Concept Screening Methodology

Subsea Systems

Risers & Umbilicals

Topsides

Hull

Station-keeping

(Mooring)

Confidential © 2013 Aker Solutions Preferred partnerSlide 29

Field Options Generator Methodology

Approximately150 Cases, 7 Families

Identified

Transfer System Production Facility Station Keeping Oil Storage/Offloading Gas Export SystemTransfer System Production Facility Station Keeping Oil Storage/Offloading Gas Export System

Tool Box Tool Box Tool Box Tool Box Tool BoxA SCRs 1 FPSO - Ship Shape 1 Spread moored - Non turret a Shuttles Only (Tandem Offloading) SCRs

B Free Standing Hybrid Risers (SLORs) 2 Semisubmersible 2 DP b FSO & Shuttles (Tandem Offloading) Free Standing Hybrid Risers (SLORs)

C Bundled Hybrid Risers 3 FPSO - Non Ship Shape 3 CALM with soft connection Bundled Hybrid Risers

D TTRs 4 FPU - Ship Shape 4 SALM with soft connection TTRs

E Flexible Risers 5 Spar 5 Turret moored - disconnectable Flexible Risers

F Offset SCRs (OSCRs) 6 FPSO - Spar Shape 6 Turret moored - non-disconnectable Offset SCRs (OSCRs)

G SCRs with SSB 7 TLP 7 with Thruster Assist

16 Cases, 4 FamiliesShort-listed

Five “Building Blocks” identified

Toolbox Options for each “Building Block”

■ Seven (7) criteria for qualitative evaluation:● Mobility● Functionality● Adaptability● Technology● Cost● Schedule● Execution

■ Criteria scored 1 to 10 on an equally weighted qualitative basis

Options selectively chosen and combined

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45 Concepts:• FPSO• SEMI_D• TLP• SEMI• FPDSO• SEMO• Tie-back to

Heidrun

8 Concepts:• FPSO• SEMI_D• TLP• SEMI

2 Concepts:• FPSO• SEMI

1 Concept:• FPSO

SKARV - Concept Selection and Definition Process

Confidential © 2013 Aker Solutions Preferred partnerSlide 31

GOM Floaters – Water Depth vs. Topsides Weight

Confidential © 2013 Aker Solutions Preferred partner09/05/2013 Slide 32

Blind Faith

Aker Solutions Scope:- Hull & mooring EPC- Riser design- Installation

Client: Chevron - 2,000 m water depth- 9,000 Ton Topsides- 45mbopd, 45mmcfgpd - Steel Catenary Risers with

Titanium Stress Joints- Polyester mooring (8 lines)

Confidential © 2013 Aker Solutions Preferred partner09/05/2013 Slide 33

Steel Catenary Risers■ 7” and 14” SCRs■ Weight coating■ Strakes for VIV■ Titanium Stress Joints

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Copyright and disclaimerCopyrightCopyright of all published material including photographs, drawings and images in this document remains vested in Aker Solutions and third party contributors as appropriate. Accordingly, neither the whole nor any part of this document shall be reproduced in any form nor used in any manner without express prior permission and applicable acknowledgements. No trademark, copyright or other notice shall be altered or removed from any reproduction.

DisclaimerThis Presentation includes and is based, inter alia, on forward-looking information and statements that are subject to risks anduncertainties that could cause actual results to differ. These statements and this Presentation are based on current expectations, estimates and projections about global economic conditions, the economic conditions of the regions and industries that are majormarkets for Aker Solutions ASA and Aker Solutions ASA’s (including subsidiaries and affiliates) lines of business. These expectations, estimates and projections are generally identifiable by statements containing words such as “expects”, “believes”, “estimates” or similar expressions. Important factors that could cause actual results to differ materially from those expectations include, among others, economic and market conditions in the geographic areas and industries that are or will be major markets for Aker Solutions’ businesses, oil prices, market acceptance of new products and services, changes in governmental regulations, interest rates, fluctuations in currency exchange rates and such other factors as may be discussed from time to time in the Presentation. Although Aker Solutions ASA believes that its expectations and the Presentation are based upon reasonable assumptions, it can give no assurance that those expectations will be achieved or that the actual results will be as set out in the Presentation. Aker Solutions ASA is making no representation or warranty, expressed or implied, as to the accuracy, reliability or completeness of the Presentation, and neither Aker Solutions ASA nor any of its directors, officers or employees will have any liability to you or any other persons resulting from your use.

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